Bicycle frame convenient to disassemble and fold

Abstract

The utility model relates to the technical field of bicycle frames, and discloses a bicycle frame convenient to disassemble and fold, which comprises a vertical pipe, two lower pipes, two front upper pipes, two rear lower pipes and two rear upper pipes, the two lower pipes and the two front upper pipes are fixedly arranged at the front end of the vertical pipe, and the two rear lower pipes and the two rear upper pipes are fixedly arranged at the front end of the vertical pipe. The two rear lower pipes and the two rear upper pipes are fixedly arranged at the rear end of the vertical pipe, overlapping mechanisms are arranged on the two lower pipes and the front upper pipe, assembling mechanisms are arranged at the front ends of the two rear lower pipes and the lower pipes close to the front ends of the rear lower pipes, each overlapping mechanism comprises a buckling plate, a first clamping column and a connecting sleeve, and the two lower pipes are connected in a hinged mode. According to the bicycle frame, the bicycle frame is light and high in strength, the size of the bicycle body can be adjusted so that the bicycle frame can be stored and carried conveniently, meanwhile, bicycle-mounted accessories can be assembled according to preferences of a user, and therefore convenience and practicability of the bicycle frame are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle frames, in particular to a bicycle frame which is easy to disassemble and fold. Background Art

[0002] As a convenient means of transportation, bicycles play an important role in modern life. With the advancement of technology, the design of bicycle frames has increasingly focused on lightweight and portability, especially the popularity of folding bicycles, which make bicycles easy to carry and store.

[0003] After searching, it is found that most bicycle frames are originally assembled with wheels and other loads when in use, which makes it inconvenient for bicycle enthusiasts to assemble them freely. At the same time, the inconvenience of carrying bicycles causes great trouble for cyclists, who have to abandon many daily necessities because of the large size of the bicycles.

[0004] Therefore, those skilled in the art provide a bicycle frame that is easy to disassemble and fold, so as to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present utility model is to solve the shortcomings of the prior art and to propose a bicycle frame that is easy to disassemble and fold. The frame is light and strong, and the volume of the bicycle body can be adjusted for storage and carrying. At the same time, the on-board accessories can be assembled according to the user's preferences, thereby improving the convenience and practicality of the frame.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A bicycle frame that is easily disassembled and folded, comprising a seat tube, a down tube, a front upper tube, a rear down tube, and a rear upper tube, wherein the number of each of the down tube, the front upper tube, the rear down tube, and the rear upper tube is two, the two down tubes and the front upper tube are fixedly arranged at the front end of the seat tube, the two rear down tubes and the rear upper tube are fixedly arranged at the rear end of the seat tube, the two down tubes and the front upper tube are provided with a superimposing mechanism, and the two rear down tubes and the front end of the down tube close to the front end thereof are provided with an assembly mechanism;

[0008] The folding mechanism includes a clip plate, a first clip column and a connecting sleeve. The two lower tubes are hingedly connected, wherein a rotating seat is fixedly provided at the front end of one of the lower tubes, the clip plate is rotatably provided on the rotating seat, the first clip column is fixedly provided at the rear end of the other lower tube, a second clip column is slidably provided inside the clip plate near its upper end, a slider is fixedly provided at the upper end of the second clip column, and the connecting sleeve is threadedly connected to the two front upper tubes;

[0009] Through the technical scheme, the volume of the frame can be reduced through the folding mechanism, thereby facilitating the frame to be put into the trunk of a car and carried on a public transportation tool. The first clamping column is clamped on the buckle plate, the second clamping column is clamped into the clamping hole under the action of the spring, the connecting sleeve is limited by the limiting plate, the sleeve connection distance of the front upper pipe is equal during the connection process, thereby ensuring the stability of the frame during use. When the frame needs to be stored and carried, the second clamping column is separated from the clamping hole and the buckle plate is bent, then the connecting sleeve is rotated to move away from the limiting plate, and then the frame is bent to realize the folding of the frame, thereby improving the convenience of the frame.

[0010] Further, the assembling mechanism comprises a head pipe and a tail pipe, the head pipe is fixedly arranged at the front end of one of the lower pipes, and the tail pipe is fixedly arranged at the lower ends of the two rear lower pipes and located at the lower end of the vertical pipe.

[0011] Through the technical scheme, the front wheel, the rear wheel and the pedal plate can be assembled and replaced through the assembling mechanism, thereby the user can match according to the user's preference, thereby improving the practicability of the device.

[0012] Further, the rear ends of the two rear lower pipes and the rear upper pipes are fixedly provided with a rear fork, and the two rear upper pipes are fixedly provided with a ring fork.

[0013] Through the technical scheme, the rear wheel can be double-braked through the rear fork and the ring fork, thereby ensuring the safety of the bicycle.

[0014] Further, the first clamping column is provided with a clamping hole, and the second clamping column is clamped into the clamping hole.

[0015] Through the technical scheme, the second clamping column is clamped into the clamping hole, thereby the frame has stability in the non-folding state.

[0016] Further, a column groove is formed in the upper end of the buckle plate, a spring is arranged in the column groove, and the two ends of the spring are fixedly connected to the rear end of the second clamping column and the inner wall of the column groove.

[0017] Through the technical scheme, the two ends of the spring are fixedly connected to the rear end of the second clamping column and the inner wall of the column groove, thereby the second clamping column is clamped in the clamping hole at all times, avoiding loosening of the buckle plate and affecting the stability of the frame.

[0018] Further, a cover plate is fixedly arranged at the rear end of the sliding block, a plate groove is formed in the upper end of the column groove in the buckle plate, and the cover plate slides in the plate groove.

[0019] Through the technical scheme, the cover plate slides in the plate groove, thereby blocking foreign matters from entering the column groove and affecting the normal use of the spring.

[0020] Further, one of the front upper tubes is fixedly provided with a limiting plate;

[0021] Through the above technical scheme, the rotation movement of the connecting sleeve is limited by the limiting plate, so that the balance and stability of the connecting part are ensured.

[0022] Further, the vertical tube, the lower tube, the front upper tube, the rear lower tube and the rear upper tube are all made of aluminum alloy material;

[0023] Through the above technical scheme, the aluminum alloy material makes the frame light, high in strength and durable.

[0024] The utility model has the advantages of the following beneficial effects:

[0025] 1. The utility model discloses a bicycle frame convenient to disassemble and fold, the volume of the frame can be reduced through the superposition mechanism, and then the frame can be conveniently put into the trunk of a car and carried on public transport tools, the first clamping column is clamped on the buckle plate, the second clamping column is clamped in the clamping hole under the action of the spring, the connecting sleeve is limited by the limiting plate, the sleeve joint distance of the front upper tube is equal in the connecting process, and then the stability of the frame in the use process is ensured, when the frame needs to be stored and carried, the second clamping column is separated from the clamping hole and the buckle plate is broken by sliding the sliding block, then the connecting sleeve is rotated to be away from the limiting plate, and then the frame is broken to realize the superposition of the frame, so that the convenience of the frame is improved.

[0026] 2. The utility model discloses a bicycle frame convenient to disassemble and fold, the front wheel, the rear wheel and the pedal can be assembled and replaced through the assembling mechanism, and then the bicycle body can be matched according to the preference of the user, so that the practicability of the device is improved.

[0027] 3. The utility model discloses a bicycle frame convenient to disassemble and fold, the frame is light and high in strength, the volume of the bicycle body can be adjusted for storage and carrying, and the vehicle-mounted accessories can be assembled according to the preference of the user, so that the convenience and practicability of the frame are improved. DRAWINGS

[0028] Figure 1 It is a perspective view of the bicycle frame convenient to disassemble and fold.

[0029] Figure 2 It is a side view of the bicycle frame convenient to disassemble and fold.

[0030] Figure 3 It is a folding state schematic view of the bicycle frame convenient to disassemble and fold.

[0031] Figure 4 The utility model provides a kind of clamping buckle structure schematic diagram of folding bicycle frame convenient to disassemble;

[0032] Figure 5 To Figure 4 Enlarged view at A.

[0033] Legend:

[0034] 1, vertical pipe;2, lower pipe;3, front upper pipe;4, rear lower pipe;5, rear fork;6, ring fork;7, superposition mechanism;701, buckle plate;702, first clamping column;703, clamping hole;704, second clamping column;705, column groove;706, spring;707, sliding block;708, cover plate;709, plate groove;710, connecting sleeve;711, limiting plate;712, rotating seat;8, assembly mechanism;801, head tube;802, tail pipe;9, rear upper pipe. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] With reference to Figures 1-5 , the utility model provides an embodiment: a kind of folding bicycle frame convenient to disassemble, including vertical pipe 1, lower pipe 2, front upper pipe 3, rear lower pipe 4 and rear upper pipe 9, the quantity of lower pipe 2, front upper pipe 3, rear lower pipe 4 and rear upper pipe 9 is two, two lower pipes 2 and front upper pipe 3 are fixedly arranged in vertical pipe 1 front end, two rear lower pipes 4 and rear upper pipe 9 are fixedly arranged in vertical pipe 1 rear end, two lower pipes 2 and front upper pipe 3 are provided with superposition mechanism 7, two rear lower pipes 4 and the lower pipe 2 front end of its front end are provided with assembly mechanism 8, corresponding two rear lower pipes 4 and rear upper pipe 9 rear end are fixedly provided with rear fork 5, two rear upper pipes 9 are fixedly provided with ring fork 6 between, and double brake can be carried out to rear wheel by rear fork 5 and ring fork 6, to ensure the safety of bicycle driving, vertical pipe 1, lower pipe 2, front upper pipe 3, rear lower pipe 4 and rear upper pipe 9 are made of aluminum alloy material, and the frame has the characteristics of lightness, high strength and durability by aluminum alloy material;

[0037] The folding mechanism 7 comprises a buckle plate 701, a first clamping column 702 and a connecting sleeve 710, and the two lower pipes 2 are hingedly connected, one lower pipe 2 is fixedly provided with a rotating seat 712 at the front end, the buckle plate 701 is rotatably arranged on the rotating seat 712, the first clamping column 702 is fixedly arranged at the rear end of the other lower pipe 2, the second clamping column 704 is slidably arranged at the upper end inside the buckle plate 701, the sliding block 707 is fixedly arranged at the upper end of the second clamping column 704, and the connecting sleeve 710 is threadedly connected to the two front upper pipes 3. The folding mechanism 7 can make the size of the frame smaller, so as to be easily put into the trunk of a car and carried on public transport. The first clamping column 702 is clamped on the buckle plate 701, the second clamping column 704 is clamped into the clamping hole 703 under the action of the spring 706, the connecting sleeve 710 is limited by the limiting plate 711, so that the sleeve connection distance of the front upper pipe 3 is equal during the connection process, thereby ensuring the stability of the frame during use. When it is necessary to store and carry the frame, the sliding block 707 is slid to make the second clamping column 704 disengage from the clamping hole 703 and bend the buckle plate 701, then the connecting sleeve 710 is rotated to move away from the limiting plate 711, and then the frame is bent to realize the folding of the frame, thereby improving the convenience of the frame. The first clamping column 702 is provided with a clamping hole 703, and the second clamping column 704 is clamped into the clamping hole 703. The second clamping column 704 clamped into the clamping hole 703 can make the frame stable in the non-folding state. The buckle plate 701 is provided with a column groove 705 at the upper end inside the buckle plate 701, and the spring 706 is arranged in the column groove 705 inside the buckle plate 701. The both ends of the spring 706 are fixedly connected to the rear end of the second clamping column 704 and the inner wall of the column groove 705. The both ends of the spring 706 are fixedly connected to the rear end of the second clamping column 704 and the inner wall of the column groove 705, so that the second clamping column 704 is clamped in the clamping hole 703 at all times, avoiding loosening of the buckle plate 701 and affecting the stability of the frame. The rear end of the sliding block 707 is fixedly provided with a cover plate 708, and the buckle plate 701 is provided with a plate groove 709 at the upper end inside the column groove 705. The cover plate 708 slides in the plate groove 709. The cover plate 708 sliding in the plate groove 709 can block foreign matters from entering the column groove 705 and affecting the normal use of the spring 706. The limiting plate 711 is fixedly arranged on one of the front upper pipes 3. The limiting plate 711 can limit the rotating movement of the connecting sleeve 710, so as to balance and stabilize the connecting part.

[0038] Referring to Figures 1-3 The assembling mechanism 8 comprises a head pipe 801 and a tail pipe 802. The head pipe 801 is fixedly arranged at the front end of one of the lower pipes 2, and the tail pipe 802 is fixedly arranged at the lower end of the two rear lower pipes 4 and located at the lower end of the vertical pipe 1. The assembling mechanism 8 can assemble and replace the front wheel, the rear wheel and the pedal, thereby matching the preferences of users, and improving the practicability of the device.

[0039] Working principle: the folding bicycle frame is used, first according to the user's preference free collocation front wheel, rear wheel and pedal, and its assembly in the head tube 801, tail pipe 802 and rear fork 5, when the bicycle in riding, move buckle plate 701 make first card column 702 card in buckle plate 701, then the second card column 704 by spring 706 make it card into card hole 703, then rotate the connecting sleeve 710, connecting sleeve 710 by limit plate 711 limit effect, make connecting sleeve 710 in the process of connection, the sleeve joint distance of front upper tube 3 is equal, in turn ensure the stability of the frame in the process of use, when need to store and carry, can slide the slide block 707, make the second card column 704 from card hole 703 and buckle plate 701, then rotate the connecting sleeve 710, make it away from limit plate 711, then move the frame can realize the superposition of the frame, make the volume of the bicycle body small, in order to facilitate storage and carrying, thereby improve the convenience and practicality of the frame.

[0040] Finally, it should be noted that: the above only for the preferred specific embodiments of the present application, and is not intended to limit the present application, although with reference to the foregoing detailed description of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A bicycle frame that is easy to disassemble and fold, comprising a seat tube (1), a down tube (2), a front upper tube (3), a rear down tube (4) and a rear upper tube (9), characterized in that: The number of the lower tube (2), the front upper tube (3), the rear lower tube (4) and the rear upper tube (9) is two, the two lower tubes (2) and the front upper tube (3) are fixedly arranged at the front end of the vertical tube (1), the two rear lower tubes (4) and the rear upper tube (9) are fixedly arranged at the rear end of the vertical tube (1), the two lower tubes (2) and the front upper tube (3) are provided with a superimposing mechanism (7), and the two rear lower tubes (4) and the front end of the lower tube (2) close to the front end thereof are provided with an assembling mechanism (8); The folding mechanism (7) comprises a snap plate (701), a first snap column (702) and a connecting sleeve (710); the two lower tubes (2) are hingedly connected, a rotating seat (712) is fixedly provided at the front end of one of the lower tubes (2), the snap plate (701) is rotatably provided on the rotating seat (712), the first snap column (702) is fixedly provided at the rear end of the other lower tube (2), a second snap column (704) is slidably provided inside the snap plate (701) against its upper end, a slider (707) is fixedly provided at the upper end of the second snap column (704), and the connecting sleeve (710) is threadedly connected to the two front upper tubes (3).

2. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: The assembly mechanism (8) comprises a head tube (801) and a tail tube (802), wherein the head tube (801) is fixedly arranged at the front end of one of the down tubes (2), and the tail tube (802) is fixedly arranged at the lower ends of the two rear down tubes (4) and is located at the lower end of the seat tube (1).

3. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: The rear ends of the two corresponding rear lower tubes (4) and rear upper tubes (9) are both fixedly provided with rear forks (5), and a ring fork (6) is fixedly provided between the two rear upper tubes (9).

4. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: The first clamping column (702) is provided with a clamping hole (703), and the second clamping column (704) is clamped into the clamping hole (703).

5. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: A column groove (705) is provided inside the clip plate (701) near its upper end, and a spring (706) is provided inside the clip plate (701) and in the column groove (705). Both ends of the spring (706) are fixedly connected to the rear end of the second clip column (704) and the inner wall of the column groove (705).

6. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: A cover plate (708) is fixedly provided at the rear end of the slider (707), and a plate groove (709) is provided inside the buckle plate (701) and at the upper end of the column groove (705), and the cover plate (708) slides inside the plate groove (709).

7. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: A limiting plate (711) is fixedly provided on one of the front upper tubes (3).

8. The bicycle frame that is easy to disassemble and fold according to claim 1, characterized in that: The vertical tube (1), the down tube (2), the front upper tube (3), the rear down tube (4) and the rear upper tube (9) are all made of aluminum alloy material.

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